@chang the “auto scroll ratio” is based on screen size and swipe velocity, meaning that if you move your finger fast it is more likely that the swipe will take effect than if you move it slowly. There is not public API to modify this but you can always override the behavior by adding some custom code. You can modify myTabbar._getAutoScrollRatio property and add a function that returns a decimal value between 0 and 1. If you return, for example, 0.8, it means you need to swipe at least 80% of the view to change the page. The original code is here.